<?php

namespace Ignus\View\Node\Expression;

use Ignus\View\Node\Expression;
use Ignus\View\Compiler;
use Ignus\View\NodeInterface;
use Ignus\View\Error\Syntax;

class Test extends Expression
{
    public function __construct(NodeInterface $node, $name, NodeInterface $arguments = null, $lineno)
    {
        parent::__construct(array('node' => $node, 'arguments' => $arguments), array('name' => $name), $lineno);
    }

    public function compile(Compiler $compiler)
    {
        $testMap = $compiler->getEnvironment()->getTests();
        if (!isset($testMap[$this->getAttribute('name')])) {
            throw new Syntax(sprintf('The test "%s" does not exist', $this->getAttribute('name')), $this->getLine());
        }

        $name = $this->getAttribute('name');
        $node = $this->getNode('node');

        // defined is a special case
        if ('defined' === $name) {
            if ($node instanceof Name || $node instanceof GetAttr) {
                $node->setAttribute('is_defined_test', true);
                $compiler->subcompile($node);
                $node->removeAttribute('is_defined_test');
                return;
            }

            throw new Syntax('The "defined" test only works with simple variables', $this->getLine());
        }

        $compiler
            ->raw($testMap[$name]->compile().'(')
            ->subcompile($node);

        if (null !== $this->getNode('arguments')) {
            $compiler->raw(', ');

            $max = count($this->getNode('arguments')) - 1;
            foreach ($this->getNode('arguments') as $i => $arg) {
                $compiler->subcompile($arg);

                if ($i != $max) {
                    $compiler->raw(', ');
                }
            }
        }

        $compiler->raw(')');
    }
}
